body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
    background-color: #3e9bc6;
    display: flex;
    justify-content: center;
    align-items: center;
}
/* 后台管理系统 */
.system-wrapper {
    width: 360px;
    height: 300px;
    background-color: #fff;
    display: flex;
    flex-direction: column;
}
.system-wrapper .title {
    font-size: 18px;
    color: #2fbfe9;
    font-weight: 700;
    text-align: center;
    margin: 8px 0;
}
.system-wrapper #username,
.system-wrapper #pwd-inp,
.system-wrapper #conf-pwd-inp {
    padding: 8px 16px;
    box-sizing: border-box;
    margin: 8px 32px;
    border: #eee 1px solid;
    font-size: 12px;
}
.system-wrapper #conf-pwd-inp {
    display: none;
}
.system-wrapper #username:focus,
.system-wrapper #pwd-inp:focus,
.system-wrapper #conf-pwd-inp:focus {
    outline: none;

}

.system-wrapper #btn,
.system-wrapper #switch-btn,
.system-wrapper #login,
.system-wrapper #sign-in,
.system-wrapper #go-login,
.system-wrapper #register {
    margin: 8px 32px;
    padding: 8px 16px;
    box-sizing: border-box;
}

.system-wrapper #btn,
.system-wrapper #login,
.system-wrapper #register {
    background-color: #1e9fff;
    border: none;
    color: #fff;
}

.system-wrapper #switch-btn,
.system-wrapper #sign-in,
.system-wrapper #go-login {
    border: none;
    background-color: #fff;
    text-align: left;
}
.system-wrapper #go-login,
.system-wrapper #register {
    display: none;
}

#record-account {
    margin-left: 32px;
}
